Design of a singlet lens and the corresponding aberration correction approaches for cell phone camera

Yupeng Zhang, Toshitsugu Ueda

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    A singlet lens model that is designed for future cell phone camera is discussed. The proposed lens model unavoidably introduces significant optical aberration because of its high field angle (maximum field angle 48°). To correct the aberrations, traditional paraxial aberration and third-order Seidel aberration are no longer applicable because the accuracy will decline dramatically when the field angle reaches a high value. In this paper, the main objective is to find an improved first-order aberration equation and an improved third-order Seidel aberration equation using field-dependent coefficients to correct lateral chromatic aberration (LAT) and distortion, respectively, for a high-field-angle singlet lens. The simulation results suggest that improved higher order aberration equations are more accurate to represent real aberrations than the lower order case. However, the chromatic aberration is still visible in the resultant images even though LAT is corrected, because of the differences of blur between different colors caused by axial chromatic aberration (AX) and other monochromatic aberrations such as field curvature. This poses a new research topic as our future work.

    Original languageEnglish
    Pages (from-to)474-485
    Number of pages12
    JournalIEEJ Transactions on Electrical and Electronic Engineering
    Volume5
    Issue number4
    DOIs
    Publication statusPublished - 2010 Jul

    Keywords

    • Chromatic aberration correction
    • Distortion correction
    • Field-dependent coefficient
    • Singlet lens

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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